The problem isn’t just too many permissions. It’s that permissions live too long. Static credentials, broad roles, and stale certificates build invisible attack surfaces inside production. Just-In-Time (JIT) access approval flips that. Instead of always-on access, it grants the exact rights you need, only when you need them, and for exactly as long as the task takes.
In a service mesh, this is security at its sharpest edge. Every request, every connection, every pod-to-pod call can be filtered by tightly scoped, time-bound privilege. The approval workflow is baked into the mesh, so no request is trusted until the right signal says it’s safe.
A JIT access approval model closes the gap between security policy and workload reality. Secrets no longer sit idle waiting to be abused. Traffic paths are guarded not just by network policy but by human-intent verification. An engineer deploying a hotfix gets a scoped token good for 10 minutes, not a permanent key that could leak tomorrow.